爾虞我詐

Simplified: 尔虞我诈

ěryúwǒzhà ㄦˇ ㄩˊ ㄨㄛˇ ㄓㄚˋ

    • lit. you hoodwink me and I cheat you (idiom)
    • fig. each tries to outwit the other
    • deceit and treachery

Character by character

Sources